Ken Griffin
GEOS icon

Ken Griffin’s Geospace Technologies GEOS Stock Holding History

Ken Griffin’s Portfolio GEOS Stock Details GEOS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$181K Sell
14,800
-19,000
-56% -$265K ﹤0.01% 11515
2025
Q4 		$572K Sell
33,800
-37,300
-52% -$749K ﹤0.01% 8704
2025
Q3 		$1.35M Buy
71,100
+22,100
+45% +$358K ﹤0.01% 6893
2025
Q2 		$699K Buy
49,000
+33,000
+206% +$246K ﹤0.01% 7840
2025
Q1 		$115K Buy
+16,000
New +$137K ﹤0.01% 11259
2024
Q4 		– Sell
-3,900
Closed -$40.3K – 14826
2024
Q3 		$40.3K Buy
+3,900
New +$37.3K ﹤0.01% 12140
2024
Q1 		– Sell
-16,300
Closed -$211K – 14877
2023
Q4 		$211K Buy
16,300
+12,100
+288% +$148K ﹤0.01% 9853
2023
Q3 		$54.4K Buy
4,200
+2,800
+200% +$26.4K ﹤0.01% 11662
2023
Q2 		$10.9K Sell
1,400
-1,800
-56% -$14.3K ﹤0.01% 13171
2023
Q1 		$22.6K Buy
3,200
+300
+10% +$1.66K ﹤0.01% 12978
2022
Q4 		$12.2K Buy
+2,900
New +$12.6K ﹤0.01% 13517
2022
Q2 		– Sell
-21,500
Closed -$124K – 13304
2022
Q1 		$124K Buy
21,500
+5,700
+36% +$37.6K ﹤0.01% 12059
2021
Q4 		$106K Buy
+15,800
New +$138K ﹤0.01% 12660
2019
Q4 		– Sell
-10,600
Closed -$163K – 9336
2019
Q3 		$163K Sell
10,600
-6,900
-39% -$99.6K ﹤0.01% 8260
2019
Q2 		$264K Buy
+17,500
New +$241K ﹤0.01% 7777
2016
Q1 		– Sell
-5,200
Closed -$73K – 7190
2015
Q4 		$73K Buy
5,200
+600
+13% +$8.54K ﹤0.01% 6989
2015
Q3 		$64K Sell
4,600
-10,000
-68% -$166K ﹤0.01% 7387
2015
Q2 		$337K Sell
14,600
-300
-2% -$6.26K ﹤0.01% 5585
2015
Q1 		$246K Buy
14,900
+6,800
+84% +$141K ﹤0.01% 5923
2014
Q4 		$215K Sell
8,100
-4,600
-36% -$133K ﹤0.01% 5896
2014
Q3 		$446K Buy
12,700
+4,900
+63% +$205K ﹤0.01% 4772
2014
Q2 		$430K Buy
7,800
+3,200
+70% +$180K ﹤0.01% 4600
2014
Q1 		$304K Buy
4,600
+2,700
+142% +$207K ﹤0.01% 5000
2013
Q4 		$180K Sell
1,900
-2,000
-51% -$184K ﹤0.01% 5130
2013
Q3 		$329K Buy
+3,900
New +$291K ﹤0.01% 4255

Other funds holding GEOS

DGI
Disciplined Growth Investors Minneapolis, Minnesota $4.89B AUM 33.85% 1-Year Est. Return
TCM
Tieton Capital Management Yakima, Washington $348M AUM 45.13% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
GWI
Grace & White Inc Ny, New York $632M AUM 34.34% 1-Year Est. Return
SEI Investments
SEI Investments Oaks, Pennsylvania $108B AUM 26.14% 1-Year Est. Return
First Eagle Investment Management
First Eagle Investment Management New York $59.9B AUM 27.01% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
MC
Moors & Cabot Boston, Massachusetts $2.57B AUM 37.84% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return

Ken Griffin's GEOS Position: Q1 2026 in Review

Ken Griffin reduced its Geospace Technologies (GEOS) stake by 44% in Q1 2026, selling an estimated $363K and leaving 32,718 shares worth $399K. The position accounts for ﹤0.01% of the portfolio, ranked #9818.

Ken Griffin first reported a position in GEOS in Q2 2013 and has held it in 23 quarters since. The position peaked at $5.31M in Q4 2014. 86 funds tracked by Wall St. Rank hold GEOS as of Q1 2026.

  • Ken Griffin held 32,718 shares of Geospace Technologies worth $399K as of Q1 2026.
  • Ken Griffin sold 26,008 Geospace Technologies shares in Q1 2026, an estimated $363K.
  • Geospace Technologies made up ﹤0.01% of Ken Griffin's portfolio in Q1 2026, its #9818 holding.
  • Ken Griffin first reported a position in Geospace Technologies in Q2 2013 and has held it in 23 quarters since.
  • Ken Griffin's Geospace Technologies position peaked at $5.31M in Q4 2014.
  • 86 funds tracked by Wall St. Rank held Geospace Technologies as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.